Lexmark T620 Service Manual - Page 34

4069-5XX/7XX Error Code 958 NAND Failure 960 - 963 RAM Memory Error 964 Emulation Error 975 - 979 Network Card X Action Before proceeding when a 958 NAND failure is displayed, perform a Power On Reset (power the printer Off then On) to see if the ECC (Error Correction Code) can reflash NAND. Error codes 960 thru 963 indicate the following specific RAM error: *960 - RAM soldered on the system board is failing. Replace the system board. *961 - RAM in slot 1 is failing. *962 - RAM in slot 2 is failing *963 - RAM in slot 3 is failing. For errors 961 thru 963, if available, switch memory from the failing slot with one from a non-failing slot to see if it fixes the problem. If it does fix the problem, replace the system board. If this fixes the problem, replace the defective RAM. Download Emulation CRC failure has occurred. The following errors indicate a failure with the network card in the specified slot. X=any card installed in slots 1,2 or 3. 975 - Unrecognizable Network Card x. Replace Network Card x. 976 - Unrecoverable software error in Network Card x. 977 - Controller software detects that a Network Card is installed in slot x but cannot establish communications with it. 978 - Bad checksum while programming Network Card x. Replace Network Card x. 979 - Flash parts failed while programming Network Card x. If the printer is a network model, replace the system board. 2-6 Service Manual